介绍了矿井地测信息系统（CG IS）的绘图原理和软件功能，对煤矿应用CGIS的现状进行了分析，提出了数字化制图的实施办法。
The paper introduces the principle and software functions of CGIS and gives an analysis on the current application in coal mine, in the same time brings forward measures of digitizing drawing.
地图模式识别是目前制图自动化的一个重点研究方向，利用计算机从扫描地形图上识别和提取地图信息为地图数字化开辟了新的途径。
Map pattern recognition is an important research direction in mapping automation now. Recognizing map information automatically from scanning map by computer carves out a new way for map digital.
线性变换应用于数字化仪制图，是一种实际需要。
It is a practical need applying linear conversion in digitized chart-making.
提出数字化控制图系统的设计方案，并讨论系统的组成、功能结构以及具体的实现方法。
The design and project of numeral control chart are put forward, and the composing of system, functional structure and methods of realization are discussed also in this paper.
提出数字化控制图系统的设计方案，并讨论系统的组成、功能结构以及具体的实现方法。
The design and project of numeral control chart are put forward, and the composing of system, functional structure and methods of realization are discussed also in this paper.
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